Neodymium Magnet With Countersunk Hole 1.Dimensions: Customized / As Required 2.Materials: Nd-Fe-B N35,N38,N40,N42,N42,N50,N52,N55 (Grade of NdFeB Magnet) 3.Plating/Coating: Nickel,Zinc,Epoxy and etc. 4.Magnetization direction: Axial Magnetized 5.Max operating temp.: 80-220 degrees celsius They are widely used for door,cabinet and other applications,which can be fixed on some place with screw and then to holding something. We can also provide you with package and accessories suitable for retail.